422844918 has 16 divisors (see below), whose sum is σ = 861646896. Its totient is φ = 138288800.

The previous prime is 422844907. The next prime is 422844923. The reversal of 422844918 is 819448224.

It is a self number, because there is not a number n which added to its sum of digits gives 422844918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664533 + ... + 665168.

It is an arithmetic number, because the mean of its divisors is an integer number (53852931).

Almost surely, 2^422844918 is an apocalyptic number.

422844918 is an abundant number, since it is smaller than the sum of its proper divisors (438801978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422844918 is a wasteful number, since it uses less digits than its factorization.

422844918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329759.

The product of its digits is 147456, while the sum is 42.

The square root of 422844918 is about 20563.1932831455. The cubic root of 422844918 is about 750.5743263090.

The spelling of 422844918 in words is "four hundred twenty-two million, eight hundred forty-four thousand, nine hundred eighteen".